`Ph-CHO+Ph-CHOoverset(Na_(2)[Fe(CO)_(4)])rarrPh-overset(O)overset("||")C-OCH_(2)-Ph` . This reaction is known as :

Options

A. Claisen reaction
B. Tischenko reaction
C. Perkin reaction
D. Cannizzaro reaction

Answer

To solve the question regarding the reaction of phenyl aldehyde (Ph-CHO) with sodium tetracarbonylferrate (Na2[Fe(CO)4]) and identify the name of the reaction, we can break it down into the following steps:

### Step 1: Identify the Reactants
The reactants in the reaction are two moles of phenyl aldehyde (Ph-CHO) and sodium tetracarbonylferrate (Na2[Fe(CO)4]).

### Step 2: Understand the Role of the Lewis Acid
Sodium tetracarbonylferrate acts as a Lewis acid in this reaction. A Lewis acid is a compound that can accept an electron pair from a donor molecule (Lewis base). In this case, the phenyl aldehyde acts as the Lewis base.

### Step 3: Mechanism of the Reaction
1. The Lewis acid (Na2[Fe(CO)4]) interacts with the carbonyl group of one of the phenyl aldehydes, facilitating the formation of a more reactive intermediate.
2. This intermediate can then react with another molecule of phenyl aldehyde.
3. The reaction leads to the formation of an ester.

### Step 4: Identify the Product
The product formed from this reaction is phenyl C=O O-CH2-Ph, which is an ester.

### Step 5: Name the Reaction
The reaction where two aldehydes react in the presence of a Lewis acid to form an ester is known as the T-Schenko reaction.

### Final Answer
The name of the reaction is **T-Schenko reaction**.

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